Company patents

TSUBAKIMOTO CHAIN CO.

TSUBAKIMOTO CHAIN CO. surprisingly shows a significant shift in its patent strategy, with its dominant category, Couplings & Brakes (Mechanical), which represents 50.0% of its portfolio, experiencing a sharp decline of 65.4% so far in 2026 after consistent growth in prior years. This indicates a potential re-evaluation of core mechanical components, while other smaller categories like Pipes & Tubing, Refrigerators & Cold Storage, and Conveying & Handling have seen a complete cessation of patenting activity so far in 2026, suggesting a broad reprioritization away from these areas.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

144 US filings (since 2023) · 6 categories · 12 themes

Advanced Clutch Mechanisms

Novel designs or control strategies for clutches, including one-way, centrifugal, or disconnect types, to manage torque transmission in powertrains and other mechanical systems.

Couplings & Brakes (Mechanical)
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78since 2023
+13.0%YoY
Mechanical Power Transmission Joints

Assemblies and components designed for reliable and efficient transfer of rotational or axial forces between mechanical parts, accommodating misalignment or specific motion profiles.

Couplings & Brakes (Mechanical)
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71since 2023
-8.3%YoY
Transmission Lubrication Systems

Designs and components for efficiently supplying, collecting, and managing lubricants (oil, grease) within gearboxes and transmissions to reduce friction, dissipate heat, and extend component operational life.

Gearing & Transmissions
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8since 2023
-75.0%YoY
Automated Storage and Sorting Systems

Systems and methods for efficient storage, retrieval, and sorting of items within warehouses, distribution centers, or manufacturing facilities, often involving vertical lifts, high-throughput sorters, or inventory management logic.

Conveying & Handling
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6since 2023
+100.0%YoY
Portable Cold Storage

Self-contained or portable units designed for maintaining specific temperatures for food, beverages, or sensitive items during transport, often incorporating active cooling or smart monitoring features.

Refrigerators & Cold Storage
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5since 2023
+100.0%YoY
Advanced Gear & Drivetrain Designs

Novel configurations and materials for gears and drivetrain components, including specialized profiles, self-aligning features, damping elements, and complex gear train arrangements like planetary, cycloidal, or strain wave gearing.

Gearing & Transmissions
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3since 2023
0.0%YoY
Integrated Functionality in Tubing

Tubes, hoses, or ducts incorporating additional components or features beyond simple fluid conveyance, such as embedded electronics (sensors, heaters), structural reinforcement, or segregated compartments for cable routing.

Pipes & Tubing
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3since 2023
+100.0%YoY
Continuously Variable Transmissions

Transmissions designed to provide a continuous range of gear ratios between fixed limits, often employing ball-planetary, toroidal, or belt-pulley mechanisms, and including their control systems for stable operation in various directions.

Gearing & Transmissions
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2since 2023
new
Non-Standard Pipe & Duct Geometries

Connectors, seals, and tubing solutions specifically designed for pipes, ducts, or conduits that deviate from standard circular cross-sections, or require flexible/collapsible forms for specific applications or installation challenges.

Pipes & Tubing
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2since 2023
0.0%YoY
Rolling Element Bearing Optimizationfiltered

Improvements to the internal components and configurations of rolling element bearings, such as cage designs, separator materials, raceway geometry, or adjustable elements, to enhance performance or lifespan.

Bearings & Shafts
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2since 2023
new
Electromechanical Braking Systems

Actuators, control, and components for converting electrical energy into braking force, often involving motors, spindles, and friction elements, particularly for vehicle applications.

Couplings & Brakes (Mechanical)
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2since 2023
n/a
Integrated Bearing Assemblies

Design and integration of bearings within larger mechanical systems or devices, focusing on mounting structures, housing, endplay management, and overall assembly for specific applications.

Bearings & Shafts
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2since 2023
n/a

Patents

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